Bobbin winding machine



Oct. 2, 1951 R. P. DRAKE 2,569,651

BOBBIN WINDING MACHINE I Filed March 50, 1946 5 Sheets-Sheet 1 INVENTOR Russell P. Drake ATroiiNEYs Oct. 2, 1951 Filed March 30, 1946 R. P. DRAKE BOBBIN WINDING MACHINE 5 Sheets-Sheet 2 INVENTOR Russe P. Dru/(e BY @a mww w ATTORNEYS Oct. 2, 1951 R, p, DRAKE 2,569,661

BOBBIN WINDING MACHINE Filed March 30, 1946 5 Sheets-Sheet 5 INVENTOR Russe II P. Dra/(e ATTORNEYS Oct. 2, 1951 R. P. DRAKE BOBBIN WINDING MACHINE 5 Sheets-Sheet 4 Filed March 50, 1946 INVENTOR Russ e// P. Dru/(e ATTORNEYS Oct. 2, 1951 DRAKE 2,569,661

BOBBIN WINDING MACHINE 5 Sheets-Sheet 5 Filed March 50, 1946 INVENTOR Russell P Bra/re ATTORNEYS Patented Oct. 2, 1951 BOBBIN WINDING MACHINE Russell P. Drake, Caledonia, Ill., asslgnor to Barbet-Colman Company, Rockford, Ill., a corporation of Illinois Application March 30, 1946, Serial No. 658,491

2 Claims. (Cl. 242-27) The invention pertains to machines for winding yarn masses of the type generally known as filling wound bobbins, and has more especial reference to improvements in the driving and control mechanism for such machines.

The primary object of the invention is to pro vide a bobbin winding machine having means of a practical character operative during the return movement of the yarn traversing device to wind a plurality of turns of yarn on the bobbin to effect a so called back winding operation.

The object of the invention thus generally set forth, together with other and ancillary advantags, are attained by the construction and 'arrangement showniby way of illustration in the accompanying drawings, in which:

Figure 1 is a'fragmentary front elevational view of a bobbin winding machine and showing in particular the driving and control mechanism and one of a series of winding units.

Fig. 2'isa fragmentary transverse sectional view through the machine, taken substantiallyin theplaneofline 2-2'ofFig.

Fig. 3 is a side elevational view ofa bobbin having a back wind produced in the operation of I the machine. 1 i

Fig. 4 isa side elevational .view of the" driving and control mechanism forthe machine,looking from the left in Fig. 1-.a portion of the housing therefor being broken away and certain-parts of the drive'shafts and-a part ofthe frame'being showninsection; I v

' Fig. 5 is a fragmentary longitudinal sectional view taken approximately in the-plane of line 55of Fig. 4, oneof=the-windingunits adjacent shown in front elevation. a

Fig. 6 is a-fragmentary transverse sectional view on line't- -t of 'Figfil and'illustrating in to l the driving andcontrol mechanism being particular an auxiliary cam operated meansfor;v

imparting rotation to: the winding spindle during the wind back operationi The improved drivingand control mechanism is herein shown as applied to a machine of the type disclosed and claimed in the copending ap- .plication of, Brooks Marcellus, Serial vNo. 527,702,

As shown in Figs. 1 and 2 of the drawings, the bobbin b is clamped between a chuck l and a tailstock or center 8. The ch 10K is mounted upon a winding spindle 9 and the cylindrical yarn traversing device, indicated at It!) is mounted upon a slide II for reciprocation axially of the spindle, the cam being rotatably supported in a gear housing .12 carried by the slide ll. Empty bobbins contained in an upright magazine l3 are shifted laterally one by one into position for clamping between the chuck 'l and tail center 8 and when thus clamped in position, a running strand s of yarn leading from a suitable source of supply is wound upon the bobbin.

Power for operation of the machine is derived from an electric motor 14 (Figs. 1 and 2) having a belt and pulley connection 15 with a shaft I6 and a second belt and pufleyconnection I! between the shaft I6 and a parallel shaft l8. The shaft 6 formsla part of the means for driving the spindle 3 and for rotating the traversing cam lfl' during the normal winding operation. This drive'is effected through the medium ofadual clutch unitl9. The shaft. I8 drives the control mechanism of the machine through the medium do fa combined clutch and brake unit 20.

f The dual clutch unit is (Fig. 5) is interposed between the shaft is and an alined shaft 2! hereinafterfreferred to as the main drive shaft of the winding mechanism. Said unit comprises in effect two clutches 22 and23 and asliding or shiftablecollar 24 therebetween. When the collar is shifted tothe left, 'the clutch '22- isengaged to drive the shaft zl, and when shifted in the opposite direction this clutch is disengaged and the clutch 23 engaged for a purpose which will presently appear.

The shaft 2! iscoupled to a shaft 2la extending longitudinally through the machine and having at each unit a bevel gear 25 meshing with a bevel gear' ZS on atransverse stub shaft 21 (Fig. 2), the latterbeing connectedby spur gearing 28 with thespindle The traversingcam I!) is also driven from the shaft 21a through [the me- .uium oi a rtransverse shaft 2 9 connected with the camby. spurgearing fll in the housing l2 and with a.sliaftj3l' parallel to and connectedfwith the shaft ;fid by' suitable spur gearing 32 (Fig; 2) "The driving connection between the shafts 29 and 3| comprises a vertical stubshaft 33 and twosets of bevel gearing 34 and 35. Axial-feeding movements are imparted to each traverse slide H by. a traverse shaft 36 extending longitudinally of the machine and: equipped with a spur gearr3l=for each winding unit, meshing aaeaeei with a rack 66 rigid with one of the slides fll. Power for actuating the traverse shaft 66 is derived from a transverse feed shaft 36 (Fig. 4) having at its rear end a worm 40 meshing with a worm wheel 6| on the traverse shaft 36. The shaft 39 is journaled in a swinging bracket 42 so that the worm is disengageable from the worm wheel to interrupt the feed.

In the present instance, the shaft 36 is driven continuously at a substantially reduced speed from the main drive shaft 2|. For this purpose, a shaft coupling 43 between the shafts 2| and 2 la (Fig. is formed with gear teeth 43a driving a gear 43b and pinion 43c forming part of a reducing gear train 44 (Fig. 6) the terminal gear of which is fast on a shaft 45 connected with the feed shaft 39 by bevel gearing 45a. Preferably. the gear train 44 includes a pair of pick-off gears 45b located externally of the gear housing so as to be readily removable when it'is desirable to change the feed rate. The feeding movement is interrupted by the disengagement of the worm 46 from the worm wheel 4| by the control mechanism as hereinafter more fully set forth.

The control mechanism is of the character set forth in said Marcellus application. Briefly, it comprises a cam shaft 46 having a series of cams for controlling the operation of the machine and initiated in operation upon completion of the normal winding cycle and stopped at the beginning thereof. The cam shaft is driven from a shaft 41 coupled with the power driven shaft ill by the combined clutch and brake unit 20. The driving connection between the shaft 41 and the cam shaft 46 is through the medium of reduc- 1 shaft 46 is idle, its clutch 5| being disengaged,

but the main or spindle drive shaft 2| is in operation. For this purpose, the clutch 22 of the dual clutch unit I9 is held engaged by a latch 52 (Fig. 5) coacting with one arm 53 of a bell crank 54, the other arm 55 of which is connected with the clutch collar 24. The bell crank is biased by a spring 56 out of such clutch engaging position.

At the same time, the feed shaft 39 is driven from the main shaft 2|, causing the traverse drive shaft 36 to actuate the traverse cam slides I] through the connections formed by the gears 31 and slide racks 38. Also, each traverse cam is driven unidirectionally through its connection with the main drive shaft.

As the end of the winding operation approaches, the connection between the feed shaft 39 and the longitudinal traverse shaft 36 is interrupted and the cam shaft 46 started. This is accomplished by means of a vertically slidable rack bar 51 operatively connected with the traversing shaft 36 and carrying a stud 56 operative in the movement of the bar to rock a transverse control shaft 59 (Figs. 1 and 5). The rack bar 51 is connected with the traverse shaft by a spur pinion 60, and near the end 'of the normal winding operation the stud 58 on the bar moves into engagement with a roller arm 6| fast on the rear end of the control shaft .59, thereby rocking the control shaft in a clockwise direction (Fig. 5).

In the initial turning movement of the control shaft 59, a spring 62 (Fig. 1) for the combined clutch and brakeunit 20 is placed under tension. This spring is connected at one end to an arm 63 on the forward end of the control blocking relation to the lever, having been moved into such position at the termination of the previous cycle of the cam shaft.

The arm 63 on the forward end of the control shaft has a second arm 61 rigid therewith connected to a link 66 having a lost motion connection with an arm 66 rigid with a second latch 176. After an initial rocking movement of the control shaft, the latch 16 is moved upwardly to release a rocker 1|. This movement relieves the tension on a spring 12 connecting the lower end o'f4 the rocker II with the clutch shifting lever In such continued movement of the control shaft, a lever arm 73 (Fig. 5) loose on the rear end of the control shaft is engaged by a lug 14 on the roller follower arm 6| and swung thereby against the action of a spring 15 to carry the latch 52 out of blocking relation to the arm 53 of the clutch shifting lever 54. As a result, the clutch lever 64 is released to the action of its spring and the clutch collar 24 shifted so as to disengage the clutch 22 and engage the clutch 23.

Upon the disengagement of the clutch 22, the

"drive of the spindle and traverse shaft by the shaft I6 is interrupted, but momentum carries the traverse slide forwardly far enough to take up a pin and slot connection (Fig. 1) between the arm 61 on the forward end of the control shaft 56 and a link 11 connected with the latch 66. Operation of this latch releases the cam shaft clutch lever 64 to the action of the spring 62 to cause the cam shaft clutch 5| to be engaged. It is held engaged by a latch 18 connected by a link 19 with an arm 60 rigid with the rocker I At the beginning of the cam shaft cycle, the driving connection between the feed drive shaft 38 and the traverse drive shaft 36 is disengaged by operation of a cam disk 8| (Fig. 4) on the cam shaft, said disk acting upon the swingable bracket 42. Thereupon, the traverse slide is returned by a cam 62 on the cam shaft. This is accomplished by a, lever 83 having a cam follower engageable with the cam 82 and carrying a gear segment -84 meshing with the rack bar 51, the arrangement being such that as the cam rotates, the rack bar is moved downwardly, turning the traversing shaft 36in a direction to return the traverse slide.

.The downward movement of the rack causes the control stud 58 to move away from the roller arm 6| so as to permit the control shaft to turn clockwise and thereby relieve the tension on the control shaft spring 62. Immediately after the cam shaft is started, a rib cam 85 on acam disk 86 rocks a member 81 rigid with the rocker ii to place the spring 62 under tension, the latch 16 having been lowered in the counterclockwise movement of the control shaft so as to enter relative to the rocker I and hold the spring under tension preparatory to stopping the cam shaft.

It will be understood that during the advance of the traverse cam during the norma1 winding cycle, the spindle 6 is driven at high speed. At the end of such operation, the spindle would normally be stopped as a result of the disengagement of the clutch l9 under the control of the cam shaft. In accordance with the present invention, auxiliary means is provided for continuing the rotation of the spindle at a slow speed during the return movement of the traversing device. This is accomplished by transferring the drive of the spindle from the power driven shaft I 5 to an auxiliary drive means, herein by cam means forming part of the control mechanism. For this purpose, the clutch 23 of the dual clutch unit l9 has its housing 88 mounted for rotational movement, and provision is made for rotating this housing at slow speed while the clutch 23 is engaged so as to turn the drive shaft 2| slowly during the return movement of the traverse slide whereby to effect a back winding of the yarn upon the bobbin as indicated in Fig. 3.

As herein shown, the clutch housing 88 is formed with an annular flange journaled in a stationary frame member 90 and retained in position by means of a ring 9|. The clutch housing is provided on its periphery with gear teeth 92 meshing with a spur gear 93 loose on the traverse shaft 36 and having rigid therewith a spur pinion 94 meshing with a vertically slidable rack 95 (Fig. 6). Engaging with the lower end of this rack is a gear segment 96 on a lever arm 91 pivoted at 98. Intermediate the ends of the lever is a roller follower 99 coacting with a cam Hill on the cam shaft 46. The arrangement is such that during the return movement of th traverse slide in the operation of the cam shaft, the cam I operating through the lever 91, rack 95, and gearing 94, 93, 92 revolves the housing 88 so as to drive the shaft 2| through the clutch 23. As shown. the clutch is of the multiple disk type, certain of the disks being keyed to the shaft 2| and the remaining disks being keyed to the housing so that when the clutch is engaged the rotation of the housing by the cam means is transmitted to the shaft 2| and its alined shaft 2 la operatively associated with the spindle and rotary traverse cam.

Near the end of the cam shaft cycle, a rib cam ||I| (Fig. on a cam disk I02 engages with a roller follower on the end of a lever arm I03 rigid with themain clutch shifting bell crank 54. The lever is thus shifted to disengage the clutch 23 and to reengage the clutch 22 so as to start a new winding cycle.

The cam shaft is brought to rest by an additional cam I04 on the cam disk 86 acting upon the member 81 so as to actuate the rocker 1|, thereby disengaging latch 18 so as to free the clutch lever '64 to the action of its spring 19. As a result, the cam shaft 5| is disengaged and the brake engaged to stop the cam shaft.

I claim as my invention:

1. A bobbin winding machine comprising, in combination, a winding spindle, a yarn traversing device reciprocable along the spindle, drive mechanism comprising a power driven shaft. a main drive shaft operatively connected with the spindle and a dual clutch unit interposed between said shafts and including a first clutch operative when engaged to drive the spindle and a second clutch engageable as an incident to the disengagement of the first clutch, said second clutch having a rotatable housing connected with said main drive shaft when said'second clutch is engaged, feed means for the traversing device having a disengageable connection with said drive mechanism, a cam shaft having a clutch controlling the operation thereof by said drive mechanism, means operative at a predetermined point in the advance of the traversing device to actuate the cam shaft clutch to start the cam shaft and substantially concurrently therewith to actuate said dual cluch unit to interrupt the drive of the spindle by said power driven shaft, means operative by the cam shaft to disengage the connection between the feed means and said drive mechanism and to return the traversing device, an auxiliary drive means for the spindle actuated by the cam shaft to impart a slow rotational movement to the main drive shaft through the second clutch and said clutch housing during such return of the traversing device, and means for interrupting the rotation of the cam shaft and actuating said dual clutch unit to interrupt the spindle drive by said auxiliary means and to start said main drive shaft.

2. A bobbin winding machine comprising, in combination, a winding spindle, a yarn traversing device reciprocable along the spindle, drive mechanism comprising a power driven shaft. a main drive shaft operatively connected with the spindle and a dual clutch unit interposed between said shafts and including a first clutch operative when engaged to drive the spindle and a second clutch engageable as an incident to the disengagement of the first clutch, feed means for the traversing device having a disengageable con; nection with said drive mechanism, a cam shaft having a clutch controlling the operation thereof. means operative at a predetermined point in the advance of the traversing device to cause engagement of the cam shaft clutch to start the cam shaft and substantially concurrently therewith to actuate said dual clutch unit to interrupt the drive of the spindle by said power driven shaft, means operative by the cam shaft to disengage the connection between the feed means and said drive mechanism and to return the traversing device, an auxiliary drive means for the spindle actuated by the cam shaft to impart a slow rotational movement to the main drive shaft through the second clutch during such return of the traversing device, and means for interrupting the rotation of the cam shaft and ac tuating said dual clutch unit to interrupt the spindle drive by said auxiliary means and to start said main drive shaft.

RUSSELL P. DRAKE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,234,356 Reiners et al Mar. 11, 19H 

